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Thread: UV sterilizer in reef tank?

  1. #1
    Scopas Tang Talon33's Avatar
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    UV sterilizer in reef tank?

    My tank is a 125 gallon reef in progress right now. I used tap water before starting my reef and when upgrading my light then came algae. I have green film algae on the glass and Cyanobacteria. I expected this and am just keeping up with good husbandry and trying to let this phase pass. Just wondering if a UV sterilizer will help this process. Or would adding one just be a good idea?
    Salty Noob

  2. #2
    aqueus Typicus Alloticus nanoreefing4fun's Avatar
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    Re: UV sterilizer in reef tank?

    Here one you may be interested in...

    The UV for U and Me
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  3. #3
    Harlequin Tuskfish
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    Re: UV sterilizer in reef tank?

    Quote Originally Posted by Talon33 View Post
    My tank is a 125 gallon reef in progress right now. I used tap water before starting my reef and when upgrading my light then came algae. I have green film algae on the glass and Cyanobacteria. I expected this and am just keeping up with good husbandry and trying to let this phase pass. Just wondering if a UV sterilizer will help this process. Or would adding one just be a good idea?
    Unless your tank has a very heavy bio load, such as a lot of livestock or a lot of feeding, I feel the negatives outweigh the benefits. I would not put one in.
    reefle likes this.

  4. #4
    Neon dottyback reefle's Avatar
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    Re: UV sterilizer in reef tank?

    I bought one, but I think a sump with macro algae, lots of flow, and maybe a GFO reactor to get rid of phosphates will help more.
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  5. #5
    JoePa lives on!!! PSU4ME's Avatar
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    Re: UV sterilizer in reef tank?

    From my reading, a UV does two main things......kills algae or kills parasites.......and that is based on flow rate through the device in relation to the power of its UV bulb. Unless you have a water column algae bloom, I wouldn't suggest it for algae. If you want parasite control, that is a different story. It will not do anything else for a tank in terms of parameters.......it could increase light penetration due to water clarity.
    ziggy likes this.
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  6. #6
    Scopas Tang Talon33's Avatar
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    Re: UV sterilizer in reef tank?

    Well my tank bio load is kinda high. I have a sump with macro. I can have this thing for free. Don't really have the money for a GFO reactor. I may just stick with the 25% water changes and manual removal till nutrients are gone
    Salty Noob

  7. #7
    Scopas Tang Talon33's Avatar
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    Re: UV sterilizer in reef tank?

    Interesting, sounds like another piece of equipment ill have to pay for the power and change the light
    Salty Noob

  8. #8
    Harlequin Tuskfish
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    Re: UV sterilizer in reef tank?

    Quote Originally Posted by Talon33 View Post
    Well my tank bio load is kinda high. I have a sump with macro. I can have this thing for free. Don't really have the money for a GFO reactor. I may just stick with the 25% water changes and manual removal till nutrients are gone
    U.v. negatives:
    Heated up water
    Tube must be cleaned at l east every 2 weeks.
    Buy new tube every 3 to 4 months
    Water flow must be within I've spec flow
    Continuous electricity usage

  9. #9
    Scopas Tang Talon33's Avatar
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    Re: UV sterilizer in reef tank?

    Well here is a question for some one. Will a UV indirectly reduce nitrates? If the UV makes organic molecules easier for skimmer to collect. So your skimmer would be running more effectively and collecting more. Then there would be less organics to breakdown and turn into nitrates.
    Salty Noob

  10. #10
    Harlequin Tuskfish
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    Re: UV sterilizer in reef tank?

    Quote Originally Posted by Talon33 View Post
    Well here is a question for some one. Will a UV indirectly reduce nitrates? If the UV makes organic molecules easier for skimmer to collect. So your skimmer would be running more effectively and collecting more. Then there would be less organics to breakdown and turn into nitrates.
    No

  11. #11
    Scopas Tang Talon33's Avatar
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    Re: UV sterilizer in reef tank?

    How so?
    Salty Noob

  12. #12
    JoePa lives on!!! PSU4ME's Avatar
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    Re: UV sterilizer in reef tank?

    No....it won't do anything for water parameters. Mine increased my water temp a whole degree as well. I'm a fan of good equipment so i'll caveat this next statement. Buy a good one or don't buy one at all. Proper strength and flow rate is crucial and most devices lie. I have an emperor aquatics one and it is legit......look into them if you want one.

    Frankly, I only used mine cause I had a ich outbreak a while back and while I didn't use it to cure the tank, I bought it for insurance/security. Past that I don't see a need for it on a reef tank.

    In my line of work, i'm always interested in root cause analysis and not chasing symptoms. A UV sterilizer chases symptons but looking to correct the root cause is the best advice I could give.
    nanoreefing4fun and dblasky like this.
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  13. #13
    Scopas Tang Talon33's Avatar
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    Re: UV sterilizer in reef tank?

    Well I think I will skip on it then. I know the root of the problem and everyone who keeps a reef tank should know why they have an algae or bacteria bloom, excess nutrients in the water. I am sure it will take awhile for these nutrients to be used up as well from a year use of tap water an no skimmer. Now I have a great skimmer and using RO water also changed how I feed. So I guess I will just keep up on husbandry and try to control algae. Until nutrients are gone
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    Salty Noob

  14. #14
    Neon dottyback reefle's Avatar
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    Re: UV sterilizer in reef tank?

    If you can have this thing for free, I'd say you should still get it lol. Using it is another story XD

  15. #15
    Scopas Tang Talon33's Avatar
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    Re: UV sterilizer in reef tank?

    Haha yeah they said I could have it. They used it on their freshwater tank took care of their cloudy water so they said I could take it. They got it at petsmart so not sure of the brand or quality of the thing
    Salty Noob

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